2900 William Dean. Prototype of what was to become the Saint class. Built unnamed with parallel boiler February 1902 and numbered 100. First shed allocation Bristol, Bath Road. Named Dean June 1902. Renamed William DeanNovember 1902. Fitted with half-cone boiler June 1903, replaced with a full-cone boiler February 1912. Superheated April 1910. Last shed allocation Chester. Withdrawn June 1932.

2902 Lady of the Lake. Built unnamed May 1906. First shed allocation Old Oak Common. Named April 1907. Fitted with half-cone boiler September 1907, but reverted to full-cone October 1908. Superheated February 1910. When the locomotive was to haul the first GWR two-hour train from Birmingham to Paddington in July 1910, a well-wisher threw a horseshoe onto the footplate. This horseshoe was then fitted on the engine until its withdrawal. Fitted with half-cone boiler September 1913, reverted back to full-cone August 1916. Outside steam pipes fitted December 1943. Last shed allocation Leamington. Withdrawn August 1949.

2903 Lady of Lyons. Built unnamed May 1906. First shed allocation Plymouth Laira. Named April 1907. Fitted with half-cone boiler March 1909, but reverted to full-cone September 1909. Superheated August 1910. Fitted with half-cone boiler July 1920, reverted back to full-cone July 1922. Outside steam pipes fitted November 1930. Last shed allocation Tyseley. Withdrawn November 1949.

2904 Lady Godiva. Built unnamed May 1906 with half-cone boiler. First shed allocation Old Oak Common. Named April 1907. Fitted with full-cone boiler September 1907. Superheated July 1910. Last shed allocation Shrewsbury. Withdrawn October 1932.

2905 Lady Macbeth. Built unnamed May 1906 with half-cone boiler. First shed allocation Newton Abbot. Named April 1907. Fitted with full-cone boiler September 1907. Replaced with half-cone boiler January 1909, but reverted to full-cone boiler with superheating November 1909. Outside steam pipes fitted March 1931. Last shed allocation Cardiff Canton. Withdrawn April 1948.

2906 Lady of Lynn. Built unnamed May 1906 with half-cone boiler. First shed allocation Old Oak Common. Named May 1907. Fitted with full-cone boiler September 1907 and superheated July 1910. Outside steam pipes fitted October 1935. August 1950 and last shed allocation Cardiff Canton. Withdrawn August 1952.

2907 Lady Disdain. Built unnamed May 1906. First shed allocation Bristol, Bath Road. Named April 1907. Superheated February 1910. Last shed allocation Newport. Withdrawn July 1933.

2908 Lady of Quality. Built unnamed May 1906. First shed allocation Old Oak Common. Named May 1907. Superheated April 1911. Outside steam pipes fitted December 1935. August 1950 and last shed allocation Swindon. Withdrawn December 1950.

2909 Lady of Provence. Built unnamed May 1906. First shed allocation Old Oak Common. Named May 1907. Superheated May 1911. Half-cone boiler fitted November 1912, but reverted to full-cone August 1913. Half-cone boiler fitted February 1916, reverted back to full-cone July 1917. Last shed allocation Wolverhampton. Withdrawn November 1931.

2910 Lady of Shalott. Built unnamed May 1906. First shed allocation Old Oak Common. Named May 1907. Half-cone boiler fitted January 1908. Superheated January 1910. Reverted to full-cone boiler January 1912. Last shed allocation Westbury. Withdrawn October 1931.

2912 Saint Ambrose. Built August 1907. First shed allocation Old Oak Common. Fitted with half-cone boiler and superheated June 1910. Reverted to full-cone boiler August 1912. Outside steam pipes fitted April 1931. August 1950 and last shed allocation Weymouth. Withdrawn February 1951.

2913 Saint Andrew. Built August 1907. First shed allocation Old Oak Common. Half-cone boiler and superheater fitted October 1909. Reverted to full-cone boiler April 1911. Last shed allocation Swindon. Withdrawn May 1948.

2914 Saint Augustine. Built August 1907. First shed allocation Old Oak Common. Half-cone boiler and superheater fitted June 1912. Reverted to full-cone boiler November 1914. Last shed allocation Weymouth. Withdrawn January 1946.

2915 Saint Bartholomew. Built August 1907. First shed allocation Old Oak Common. Half-cone boiler fitted April 1909. Superheated May 1910. Reverted to full-cone boiler December 1911. August 1950 and last shed allocation Chester. Withdrawn October 1950.

Please note that table shows changes in boiler type only. For example, 4003 Lode Star was withdrawn in 1951 with its seventeenth boiler, but as all were of the full-cone type, no boiler changes are shown.